Shuttle-check for looms.



J. NORTHROP.

SHUTTLE CHECK FOE LOOMS.

APPLICATION rum) SEPT. 12, 1911.

1,033,263. Patented July 23, 1912.

UNITED STATES PATENT OFFICE. I JOIlAS NORTHROP, OF HOPEDALE,MASSACHUSETTS, ASSIGNOR T DRAPER COMPANY,

I OF HOPEDALE, MASSACHUSETTS, A CORPORATION MAINE.

SHUTTLE-CHECK FOR LOOMS.

Specification vof Letters Patent.

Patented July 23, 1912.

Application filed September 12, 1911. Serial Ito 648,887.

To all whom it may concern Be it known that I, JONAS NoR'rHRoP, acitizen of the United States, residing at Hopedale, in the county oflVorcester and State of Massachusetts, have invented an Improvement inShuttle-Checks for Looms, of which the following description, inconnection with the accompanying drawings, is

a specification, like letters on the drawings representing like parts. y

-he invention herein to be described relatch to looms for weaving andmore particularly to the means for. arresting or checking the shuttle asit passes into the shuttle boxatthe terminal portion of its pickingmotion. As the shuttle makes its picklng excursion from one to theopposite side of the 100m and enters the receiving shuttle box, itisdesirable that it be gradually, yet effectively, brought to rest 'inproper position and without rebound. To those skilled in v the art the.importance of these desirable characteristics in the checking action ofthe shuttle is well understood, especially in high speed looms and theso called automatic looms, wherein the supply of filling is renewed atintervals without stopping the machine.

With these well understood desirable characteristics of shuttle checkingmotions in View the aims and purposesof the present invention will bestbe made clear from the following description and accompanying drawingsof one form of means for carrying the invention into practical effect,it being understood that theinve'ntion is not circumscribed by thedetails thereof, but in its true scope is definitely ,set forth by theclaims. I

In the drawing :-Figure 1 is a side view of suflicient of a loom to makeclear the character and operation of the present invent-ion, and itsassociation with other parts; Fig. 2 is a front elevation of-the partsshown by Fig. 1; and Fig. 3 is asection on the line 33, Fig. 1.

The loom frame may be of any desired form and character to properlysupport the breast beam 2, V

'3, Fig. 1, for the .cam or under shaft 4,

operating parts, and as shown, it comprises the cast metal side frames1, joined by a and having suitable bearings driven from usual or desiredsame of printer. The lay 5 .ing shaft 17. The

i may vary has the' usa auaielshxa e,

I one at each end, lengthwise of which works shuttle box after eachpicking action.

The parts so far described may be all as usual and may operate asheretofore, except as modified in the manner presently to be explained;

Mounted on the cam shaft 4 is the cam 14, adapted to act upon the rollried by the arm 16 picking 15 carprojecting from the pickshaft 17 issupported to rock under the action of the and as shown, is supported insuitable bearings 18 and 19 carried by suitablesustaining brackets 20and 21. Projecting from, the

picking cam,

picking shaft is the picking arm 22 which is itself connected to thepicker stickT, as by means of the strap 23,- the construction being suchthat upon rocking movement of the picking shaft under the action of theplcking cam, the picker stick andv perforce the picker will be actua'tcdto impart to the shuttle its picking movemcnt; and upon the completionof the picking movement the return spring 12 may return the picker stickand picker toward the outer endof the shuttle box.

- Except in so'far as thestructure or oper-.

ation of the parts thus far'described may be changed to suit theirassociation with iteatures of the present invention, theyv may be asheretofore common'in the art or of other approved type.

As hereinbefore noted it is desirable that the shuttle shall be broughtto rest in proper position in the shuttle box at the completion of itspicking movement. Failure in properly positionin the shuttle in theshuttle box may arise rom various causes. For instance the shuttle mayhave greater momentum at one time than another owin if 'thewshuttlechecking force remains the we, obviously the position at which the toits changing load of yarn or filling, or t e'loom in speed, in eitherofwhich cases 'cient character for shuttle will be brought to rest willvery; In another case the :force of the picking mo tion may be lightersometimes than at oth s whereupon, under shuttle checking action ofsubstantially constant oinounh the shuttle may not suiliciently enterthe shuttle box or it may enter and then rebound. Regardless of cause,the objections to improper positioning or the shuttle in the shuttlehoist are Well unde tood, and the present invention has in v v means ofsimple and eiiibringing the shuttle to rest properly positioned in itsbox, and also in simple devices for enebling'tho loom tender to readilyadjust the checking action of said means-without in any. way interferingwith the loom operation.

In the form of the invention illustrated, movement of the picker and picrer stick by the shuttle after it has entered the i301; is utilized tocreate frictional. resistance to such movement of increasing amountdependent upon the momentum oi? the shuttle, and devices are provided tovary the degree of increase to suit conditions of use, all oi? whichwill appear from the tollmving form of means shown as an embodiment ofthe invention.

Secured to the picker shaft 17, by the bolt is an arm 25, the free end26 wheeof has secured thereto one end 27 of a iriction hand 28 passingaround a, fixed friction sent. The friction seat preferably se cured tothe loom frame, and in the form of such seat illustrated, it is producedby a port of the hearing '19 for the end of the picker shaft, butobviously the friction seat with which the friction. bond cooperates mayhe ,variously formed within the es entials oi? the present invention.After pming' about the friction sent the band 28 has its other 1 endsecured to or connected with n tension spring 29, the construction beingsuch that after the picking action and when the picker stick has beenmoved outward of the shuttle box by its return spring 12, the frictionband 28 will modify further action of the return spring 12 and cause thepicker stick and picker to come to rest substantially indicated by Fig.2, withjhecp iclrer and picker stick in a, position betwe n the innerand outer ends of the shuttle box. In this position it will he 12 holdsthe picker stick to the left, Fig. 2, but owing to the frictionalretardation of the bond 28 on its seat, the picker shsit is preventedfrom responding to the demands of the spring 12, the picking roll 15 isheld clear of the picking cam 14'. and the picker is in a positionbetween the ends of the shuttle hon ready to receive the impact of theincoming shuttle. shutt e stri 1e picker 8, it

coves the noted the return spring 'When the incoming 1 whereupon thepicker shaft is turned thi ough its connections with, the picker stick,

end. the arm 25 is caused to bind the triotlOflibd'ild with greater andgreater force for securing this variation in retnrding effect of thefriction hand, one end of the tension spring 29 is secured to the hookedend 30 of the adjusting rod 31, which preternbly passes upward at theloom side through guides 32 and 83, its upper end being provided withscrew threads 34: and suitable adjusting and "lock nuts 35' and 36; theconstruction being" such that by manipulating the said nuts the rod 31end perforce the tension of the spring 29 may readily be varied to suitconditions oi? use, Thus Without stopping the loom the loom tender canadjust the checking action of the shuttle 95 checking means and can atonce observe the eiiect of: the adjustment-so that the shuttle may beunerringlyhrought to rest in proper position in the shuttle box.

@hriously, changes may be made in deloo tails of "he described meanswithout deporting" from the true scope of the present invention which isdefinitely stated by the claims. c 1

lVhst is claimed is; I

'1. In aloom, thecomloinetion of the shut tle bore. the picker stick andpicker adapted to be moved by the shuttle as it moves in the shuttlebox, means actuated by the shuttle movement and including the picker andpicker stick to create frictional resistance to such 'moyenient ofincreasing amount dependent upon the momentum of the shuttle, and meanssecured to e fixed part of the loom for varying the degree of, increaseduring the running of the loom.

9-. In a loom, the combination of the shut tle box, a picker rockslisft,'the picker and picker stick, a friction device ferretsrdingoutward movement of the picker under the 129 action of the shuttle, andmeans actuated by the picke rock shaft for causing said -l'rictiondevice to act progressively with increasing energy as the shuttle .movesto ward the outer end of the shuttle box.

3. In a loom, the combination of the shut tlc box, a picker roclrshoott, the picker and picker sticln :iric'tion devic :tor retardingmovement oft-he picker under the it orthe shin-i set-noted 'hy the 13picker rock shaft for causing said friction device to act progressivelywith increasing energy as the shuttle moves toward the outer end of theshuttle box, and means, secured to the loom frame for adjusting theaction of the friction device while the loom is in operation.

4. In a loom, the combination of the lay and shuttle box, the pickerstick and picker, the picking shaft for actuating the,

stick and picker, means comprising a friction band .and operating armtherefor connected to the picking shaft to retard movc ment of thepicker toward the outer end of Y the shuttle box under the action of theshuttle, and devices for regulating the action of 4 said means while theloom is in operation.

6. In a loom, the combination of the lay and shuttle box, the pickerstick and picker, the picking shaft for acting upon the picker stick,and means acting frictionally on the picker shaft, to retard rotativemovement of the picking shaft in one direction to check the shuttle inthe shuttle box.

7 In a loom, the combination of the lay and shuttle box, the pickerstick and picker, the picking shaft for acting upon the picker stick,means acting frictionally on the picker' shaft to retard rotativemovement of the picking shaft in one direction to check the shuttle inthe shuttle box, and means for adjusting the first mentioned meanswhile. the loom is running.

8. In a loom, the combination of a picking I shaft, a picker, devicesbetween the picking shaft and picker for movin each by the other, andmeans permitting. ree movement of the picking shaft in one direction forimparting picking action to the picker and for exerting a frictionalretarding force to movement of the picking shaft by the picker in thereverse direction.

9. In a loom, the combination of a picking shaft, a picker, devicesbetween the picking shaft and picker for moving each by the other, meanspermitting free movement of the picking shaft in' one direction forimparting picking action to the picker and for exerting a frictionalretarding force upon the picking shaft to movement in the reversedirection, and devices for regulating the retarding action of said meanswhile the loom is running.

10. In. a loom, the combination of the picking shaft, a picker, devicesbetween the picker and picking shaft for moving each by the other, afriction band and its seat, and connections with the picking shaft tocause the latter to bind the friction band upon its seat when thepicking shaft is moved in one direction.

11. In a loom, the combination of the picking shaft, a picker, devicesbetween the picker and picking shaft for moving each by the other, afriction band and its seat, connections with the pickingshaft to causethe latter to bind the friction band'upon its seat when the pickingshaft is moved in one direction, and a device for regulating the actionof the'friction band and seat during the operation of the loom.

12. In a loom, the combination of the picking'shaft, a picker, means foroperatively connecting the said shaft and picker,

a friction band and seat, one endof said friction band being connectedto the picking shaft, and means for holding the other endof the band.

13. In a loom, the combination of the picking shaft, a picker, means foroperatively connecting the said shaft and picker,

a friction band and seat, one end of said friction band being connectedto the picklng shaft, means for holding the other end of the band, anddevices forv adjusting said JONAS NORTHROP.

Witnesses:

WM. 0. PERKINS, E. D. Oseoon.

in the presence of

